Patent US3276822A successfully refreshed from Google Patents.
US3276822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Braking of motor vehicles
Assignee: National Research Development Corp UK
•
Filing: 1964-06-22
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Granted: 1966-10-04
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Lister Robert Duncan
- 👤 Kemp Richard Norman
- 👤 Wilkins Henry Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:19
CPC Classifications
B; B60; B60T; B60T8/00; B60T8/32; B60T8/72; B60T8/74; B60T13/00; B60T13/10; B60T13/12; B60T13/16; B60T13/161; B60T8/321; B60T8/3295; B60T8/34; B60T8/42; B60T8/4208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A VEHICLE HYDRAULIC BRAKING SYSTEM WHICH COMPRISES HYDRAULIC BRAKE ACTUATING MEANS, HYDRAULIC MASTER CYLINDER MEANS, A BRAKE PEDAL CONNECTED TO ACTUATE SAID CYLINDER MEANS, A PIPE LINE COUPLING SAID CYLINDER MEANS AND SAID ACTUATING MEANS, AND SELECTIVELY OPERABLE MEANS CONNECTED TO SAID PIPE LINE TO CAUSE THE HYDRAULIC PRESSURE THEREIN TO PULSATE, SYSTEM CONTROL MEANS COMPRISING DECELERATION RESPONSIVE MEANS RESPONSIVE TO THE DEGREE OF HYDRAULIC PRESSURE IN SAID PIPE LINE WHEN SAID BRAKING SYSTEM IS OPERATED TO OPERATE SAID SELECTIVELY OPERABLE MEANS UNDER CONDITIONS OF HEAVY BRAKING WITHOUT CORRESPONDINGLY RAPID DECELERATION.
Claim 2
Dependent Claim
92 words
IN A VEHICLE HYDRAULIC BRAKING SYSTEM WHICH COMPRISES HYDRAULIC BRAKE ACTUATING MEANS, HYDRAULIC MASTER CYLINDER MEANS, A BRAKE PEDAL CONNECTED TO ACTUATE SAID CYLINDER MEANS, A PIPE LINE COUPLING SAID CYLINDER MEANS AND SAID ACTUATING MEANS, AND SELECTIVELY OPERABLE MEANS CONNECTED TO SAID PIPE LINE TO CAUSE THE HYDRAULIC PRESSURE THEREIN TO PULSATE, SYSTEM CONTROL MEANS COMPRISING DECELERATION RESPONSIVE MEANS RESPONSIVE TO THE DEGREE OF HYDRAULIC PRESSURE IN SAID PIPE LINE WHEN SAID BRAKING SYSTEM IS OPERATED TO OPERATE SAID SELECTIVELY OPERABLE MEANS UNDER CONDITIONS OF HEAVY BRAKING WITHOUT CORRESPONDINGLY RAPID DECELERATION.
References Cited (Backward Citations)
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Cited
US2252482A
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US2270586A
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US2289145A
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FR973544A
Cited
US2483205A
Cited
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Cited
US3089734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |